Injection Molding Process Technologist

Shape high‑quality parts. Improve every cycle. Own the process.

At MMI, we design and manufacture solutions in advanced composites and engineered resins for a wide range of industries. We are headquartered in Saline, Michigan with offices in Troy, Warren, and Monterrey, Mexico. Our promise is straightforward: deliver superior quality on schedule and at a competitive cost—while building an inclusive workplace where ideas and teamwork drive results.

Your evening-to-overnight rhythm

Based at our Warren, MI facility, you will be the go‑to expert on C Shift, keeping molding lines running safely and consistently.

• C Shift schedule: Monday through Wednesday 6:00pm–12:15am; Thursday/Friday or Saturday/Sunday 6:00pm–6:15am

What a shift can look like

You arrive ready to lead by example on safety and quality. You prep molds, perform changeovers, and dial in machine settings. When a defect appears, you investigate, run 5 Why, adjust the process, and document what you learned. You coach Operators, sync with the Shift Supervisor, and loop in Engineering with clear updates—always looking for the next second to shave off cycle time without compromising quality.

Core responsibilities

• Champion safety, health, and quality standards on the floor
• Set up, optimize, and change over molds and auxiliary equipment
• Monitor, stabilize, and fine‑tune molding parameters to hold part quality
• Troubleshoot equipment and process issues to cut scrap and downtime
• Partner with Supervisors and Operators; help train and upskill the team
• Record process changes and communicate updates directly to Engineering
• Support efficiency goals by reducing setup time and improving cycle times

What you bring

• Hands‑on plastic injection molding manufacturing experience
• Skilled in processing, setup, troubleshooting, and optimization of molding equipment
• Proven ability to identify and correct molding defects, machine issues, and process variation
• 3 years of direct, on‑the‑floor processing and troubleshooting experience
• Mold design best‑practice knowledge is required
• Experience with large‑part injection molding is ideal
• Light maintenance capability
• Reliable, punctual attendance
• Strong computer and typing skills
• Clear, professional communication across all organizational levels
• Ability to lift up to 50 lbs, climb ladders up to 15 ft, and stand or walk 6–12 hours per day

Thrives under pressure in a fast‑paced manufacturing setting while meeting production, quality, and safety requirements.

Work environment and expectations

• Mix of office and manufacturing floor work
• Standing in excess of 7.5 hours per day in areas that may be hot, noisy, and dirty
• Serve as a technical resource and mentor to Operators and teammates

Tools and methods you use

• 5 Why (root cause analysis)
• Standard Operating Procedures (SOPs)
• Process engineering fundamentals
• Plastic injection processing

Why you will thrive at MMI

• Comprehensive benefits: Medical, Dental, Vision, Company‑paid Short‑ and Long‑Term Disability, robust Wellness Program, tuition reimbursement, and a 401(k) with company match
• Vacation and sick time
• Up to ten (10) paid holidays, including one diversity holiday
• Perfect attendance and employee referral bonus opportunities (up to $200 per referral)
• Growth pathways and job training for energetic, career‑minded professionals
• Our Saline, MI location is minutes from Planet Fitness, Emagine Saline, and numerous local businesses

Ready to keep great processes running—and make them better every week? Join us.

Who we are, at a glance: MMI is a plastic injection molding and engineering solutions provider specializing in advanced composites and engineered resins with teams in Saline, Troy, Warren, and Monterrey, Mexico.

Legal and inclusion

MMI Engineered Solutions is an equal opportunity employer.